Tell us about yourself!
For that bell I used a steel spherical bearing. In the years since, I have learned that a hockey puck is a much better solution. Drill a hole in the center of the puck and hang it about 2/3 of the way down from the top of the bell. The puck is easy to find and not expensive.
Hi Jason. I've just started my own CNC build, and yours is the closest to what I've imagined. Would you be willing to share your SketchUp file?